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Finding the Fourth Proportional to 473.81, 710.71 and 149.18

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Solution

The fourth proportional to 473.81, 710.71 and 149.18 is: 223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.81 : 710.71 = 149.18 : x
  2. Step 2: Convert to fraction form
    473.81/710.71 = 149.18/x
  3. Step 3: Cross multiply
    473.81x = 710.71 × 149.18
  4. Step 4: Simplify right side
    473.81x = 106,019.79
  5. Step 5: Solve for x
    x = 106,019.79/473.81
  6. Step 6: Final answer
    x = 223.76

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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.