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Finding the Fourth Proportional to 1,119.98, 1,545.67 and 654.38

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Solution

The fourth proportional to 1,119.98, 1,545.67 and 654.38 is: 903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.98 : 1,545.67 = 654.38 : x
  2. Step 2: Convert to fraction form
    1,119.98/1,545.67 = 654.38/x
  3. Step 3: Cross multiply
    1,119.98x = 1,545.67 × 654.38
  4. Step 4: Simplify right side
    1,119.98x = 1,011,455.53
  5. Step 5: Solve for x
    x = 1,011,455.53/1,119.98
  6. Step 6: Final answer
    x = 903.10

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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.