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Finding the Fourth Proportional to 417.33, 623.36 and 348.95

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Solution

The fourth proportional to 417.33, 623.36 and 348.95 is: 521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.33 : 623.36 = 348.95 : x
  2. Step 2: Convert to fraction form
    417.33/623.36 = 348.95/x
  3. Step 3: Cross multiply
    417.33x = 623.36 × 348.95
  4. Step 4: Simplify right side
    417.33x = 217,516.61
  5. Step 5: Solve for x
    x = 217,516.61/417.33
  6. Step 6: Final answer
    x = 521.21

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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.