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Finding the Fourth Proportional to 373.89, 558.11 and 346.79

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Solution

The fourth proportional to 373.89, 558.11 and 346.79 is: 517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.89 : 558.11 = 346.79 : x
  2. Step 2: Convert to fraction form
    373.89/558.11 = 346.79/x
  3. Step 3: Cross multiply
    373.89x = 558.11 × 346.79
  4. Step 4: Simplify right side
    373.89x = 193,547.28
  5. Step 5: Solve for x
    x = 193,547.28/373.89
  6. Step 6: Final answer
    x = 517.65

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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.