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Finding the Fourth Proportional to 936.68, 1,292.74 and 522.76

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Solution

The fourth proportional to 936.68, 1,292.74 and 522.76 is: 721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.68 : 1,292.74 = 522.76 : x
  2. Step 2: Convert to fraction form
    936.68/1,292.74 = 522.76/x
  3. Step 3: Cross multiply
    936.68x = 1,292.74 × 522.76
  4. Step 4: Simplify right side
    936.68x = 675,792.76
  5. Step 5: Solve for x
    x = 675,792.76/936.68
  6. Step 6: Final answer
    x = 721.48

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.