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Finding the Fourth Proportional to 925.70, 1,277.51 and 552.69

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Solution

The fourth proportional to 925.70, 1,277.51 and 552.69 is: 762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.70 : 1,277.51 = 552.69 : x
  2. Step 2: Convert to fraction form
    925.70/1,277.51 = 552.69/x
  3. Step 3: Cross multiply
    925.70x = 1,277.51 × 552.69
  4. Step 4: Simplify right side
    925.70x = 706,064.24
  5. Step 5: Solve for x
    x = 706,064.24/925.70
  6. Step 6: Final answer
    x = 762.74

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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.