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Finding the Fourth Proportional to 691.03, 951.95 and 525.08

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Solution

The fourth proportional to 691.03, 951.95 and 525.08 is: 723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.03 : 951.95 = 525.08 : x
  2. Step 2: Convert to fraction form
    691.03/951.95 = 525.08/x
  3. Step 3: Cross multiply
    691.03x = 951.95 × 525.08
  4. Step 4: Simplify right side
    691.03x = 499,853.60
  5. Step 5: Solve for x
    x = 499,853.60/691.03
  6. Step 6: Final answer
    x = 723.34

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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.