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Finding the Fourth Proportional to 478.78, 718.13 and 232.00

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Solution

The fourth proportional to 478.78, 718.13 and 232.00 is: 347.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.78 : 718.13 = 232.00 : x
  2. Step 2: Convert to fraction form
    478.78/718.13 = 232.00/x
  3. Step 3: Cross multiply
    478.78x = 718.13 × 232.00
  4. Step 4: Simplify right side
    478.78x = 166,603.20
  5. Step 5: Solve for x
    x = 166,603.20/478.78
  6. Step 6: Final answer
    x = 347.98

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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.