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Finding the Fourth Proportional to 710.68, 981.01 and 525.66

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Solution

The fourth proportional to 710.68, 981.01 and 525.66 is: 725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.68 : 981.01 = 525.66 : x
  2. Step 2: Convert to fraction form
    710.68/981.01 = 525.66/x
  3. Step 3: Cross multiply
    710.68x = 981.01 × 525.66
  4. Step 4: Simplify right side
    710.68x = 515,675.09
  5. Step 5: Solve for x
    x = 515,675.09/710.68
  6. Step 6: Final answer
    x = 725.61

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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.