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Finding the Fourth Proportional to 1,134.99, 1,566.07 and 715.41

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Solution

The fourth proportional to 1,134.99, 1,566.07 and 715.41 is: 987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.99 : 1,566.07 = 715.41 : x
  2. Step 2: Convert to fraction form
    1,134.99/1,566.07 = 715.41/x
  3. Step 3: Cross multiply
    1,134.99x = 1,566.07 × 715.41
  4. Step 4: Simplify right side
    1,134.99x = 1,120,380.35
  5. Step 5: Solve for x
    x = 1,120,380.35/1,134.99
  6. Step 6: Final answer
    x = 987.13

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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.