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Finding the Fourth Proportional to 372.16, 555.13 and 340.71

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Solution

The fourth proportional to 372.16, 555.13 and 340.71 is: 508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.16 : 555.13 = 340.71 : x
  2. Step 2: Convert to fraction form
    372.16/555.13 = 340.71/x
  3. Step 3: Cross multiply
    372.16x = 555.13 × 340.71
  4. Step 4: Simplify right side
    372.16x = 189,138.34
  5. Step 5: Solve for x
    x = 189,138.34/372.16
  6. Step 6: Final answer
    x = 508.22

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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.