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Finding the Fourth Proportional to 473.70, 710.52 and 257.70

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Solution

The fourth proportional to 473.70, 710.52 and 257.70 is: 386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.70 : 710.52 = 257.70 : x
  2. Step 2: Convert to fraction form
    473.70/710.52 = 257.70/x
  3. Step 3: Cross multiply
    473.70x = 710.52 × 257.70
  4. Step 4: Simplify right side
    473.70x = 183,101.00
  5. Step 5: Solve for x
    x = 183,101.00/473.70
  6. Step 6: Final answer
    x = 386.53

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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.