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Finding the Fourth Proportional to 347.55, 521.30 and 116.45

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Solution

The fourth proportional to 347.55, 521.30 and 116.45 is: 174.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.55 : 521.30 = 116.45 : x
  2. Step 2: Convert to fraction form
    347.55/521.30 = 116.45/x
  3. Step 3: Cross multiply
    347.55x = 521.30 × 116.45
  4. Step 4: Simplify right side
    347.55x = 60,702.20
  5. Step 5: Solve for x
    x = 60,702.20/347.55
  6. Step 6: Final answer
    x = 174.66

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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.