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Finding the Fourth Proportional to 372.30, 555.60 and 346.56

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Solution

The fourth proportional to 372.30, 555.60 and 346.56 is: 517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.30 : 555.60 = 346.56 : x
  2. Step 2: Convert to fraction form
    372.30/555.60 = 346.56/x
  3. Step 3: Cross multiply
    372.30x = 555.60 × 346.56
  4. Step 4: Simplify right side
    372.30x = 192,548.74
  5. Step 5: Solve for x
    x = 192,548.74/372.30
  6. Step 6: Final answer
    x = 517.19

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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.