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Finding the Fourth Proportional to 901.77, 1,244.45 and 528.76

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Solution

The fourth proportional to 901.77, 1,244.45 and 528.76 is: 729.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.77 : 1,244.45 = 528.76 : x
  2. Step 2: Convert to fraction form
    901.77/1,244.45 = 528.76/x
  3. Step 3: Cross multiply
    901.77x = 1,244.45 × 528.76
  4. Step 4: Simplify right side
    901.77x = 658,015.38
  5. Step 5: Solve for x
    x = 658,015.38/901.77
  6. Step 6: Final answer
    x = 729.69

Related Problems

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Half scale
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Double scale
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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.