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Finding the Fourth Proportional to 1,127.39, 1,555.88 and 754.52

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Solution

The fourth proportional to 1,127.39, 1,555.88 and 754.52 is: 1,041.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.39 : 1,555.88 = 754.52 : x
  2. Step 2: Convert to fraction form
    1,127.39/1,555.88 = 754.52/x
  3. Step 3: Cross multiply
    1,127.39x = 1,555.88 × 754.52
  4. Step 4: Simplify right side
    1,127.39x = 1,173,931.03
  5. Step 5: Solve for x
    x = 1,173,931.03/1,127.39
  6. Step 6: Final answer
    x = 1,041.29

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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.