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Finding the Fourth Proportional to 691.59, 954.48 and 525.51

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Solution

The fourth proportional to 691.59, 954.48 and 525.51 is: 725.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.59 : 954.48 = 525.51 : x
  2. Step 2: Convert to fraction form
    691.59/954.48 = 525.51/x
  3. Step 3: Cross multiply
    691.59x = 954.48 × 525.51
  4. Step 4: Simplify right side
    691.59x = 501,588.78
  5. Step 5: Solve for x
    x = 501,588.78/691.59
  6. Step 6: Final answer
    x = 725.27

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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.