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Finding the Fourth Proportional to 691.46, 955.74 and 525.94

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Solution

The fourth proportional to 691.46, 955.74 and 525.94 is: 726.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.46 : 955.74 = 525.94 : x
  2. Step 2: Convert to fraction form
    691.46/955.74 = 525.94/x
  3. Step 3: Cross multiply
    691.46x = 955.74 × 525.94
  4. Step 4: Simplify right side
    691.46x = 502,661.90
  5. Step 5: Solve for x
    x = 502,661.90/691.46
  6. Step 6: Final answer
    x = 726.96

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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.