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Finding the Fourth Proportional to 373.80, 558.24 and 312.96

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Solution

The fourth proportional to 373.80, 558.24 and 312.96 is: 467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.80 : 558.24 = 312.96 : x
  2. Step 2: Convert to fraction form
    373.80/558.24 = 312.96/x
  3. Step 3: Cross multiply
    373.80x = 558.24 × 312.96
  4. Step 4: Simplify right side
    373.80x = 174,706.79
  5. Step 5: Solve for x
    x = 174,706.79/373.80
  6. Step 6: Final answer
    x = 467.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.