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Finding the Fourth Proportional to 984.18, 1,476.27 and 497.13

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Solution

The fourth proportional to 984.18, 1,476.27 and 497.13 is: 745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.18 : 1,476.27 = 497.13 : x
  2. Step 2: Convert to fraction form
    984.18/1,476.27 = 497.13/x
  3. Step 3: Cross multiply
    984.18x = 1,476.27 × 497.13
  4. Step 4: Simplify right side
    984.18x = 733,898.11
  5. Step 5: Solve for x
    x = 733,898.11/984.18
  6. Step 6: Final answer
    x = 745.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.