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Finding the Fourth Proportional to 925.72, 1,277.72 and 576.20

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Solution

The fourth proportional to 925.72, 1,277.72 and 576.20 is: 795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.72 : 1,277.72 = 576.20 : x
  2. Step 2: Convert to fraction form
    925.72/1,277.72 = 576.20/x
  3. Step 3: Cross multiply
    925.72x = 1,277.72 × 576.20
  4. Step 4: Simplify right side
    925.72x = 736,222.26
  5. Step 5: Solve for x
    x = 736,222.26/925.72
  6. Step 6: Final answer
    x = 795.30

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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.