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Finding the Fourth Proportional to 545.08, 817.53 and 155.14

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Solution

The fourth proportional to 545.08, 817.53 and 155.14 is: 232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.08 : 817.53 = 155.14 : x
  2. Step 2: Convert to fraction form
    545.08/817.53 = 155.14/x
  3. Step 3: Cross multiply
    545.08x = 817.53 × 155.14
  4. Step 4: Simplify right side
    545.08x = 126,831.60
  5. Step 5: Solve for x
    x = 126,831.60/545.08
  6. Step 6: Final answer
    x = 232.68

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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.