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Finding the Fourth Proportional to 473.88, 710.88 and 185.40

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Solution

The fourth proportional to 473.88, 710.88 and 185.40 is: 278.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.88 : 710.88 = 185.40 : x
  2. Step 2: Convert to fraction form
    473.88/710.88 = 185.40/x
  3. Step 3: Cross multiply
    473.88x = 710.88 × 185.40
  4. Step 4: Simplify right side
    473.88x = 131,797.15
  5. Step 5: Solve for x
    x = 131,797.15/473.88
  6. Step 6: Final answer
    x = 278.12

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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.