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Finding the Fourth Proportional to 1,127.03, 1,555.11 and 654.94

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Solution

The fourth proportional to 1,127.03, 1,555.11 and 654.94 is: 903.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.03 : 1,555.11 = 654.94 : x
  2. Step 2: Convert to fraction form
    1,127.03/1,555.11 = 654.94/x
  3. Step 3: Cross multiply
    1,127.03x = 1,555.11 × 654.94
  4. Step 4: Simplify right side
    1,127.03x = 1,018,503.74
  5. Step 5: Solve for x
    x = 1,018,503.74/1,127.03
  6. Step 6: Final answer
    x = 903.71

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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.