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Finding the Fourth Proportional to 416.32, 621.59 and 358.48

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Solution

The fourth proportional to 416.32, 621.59 and 358.48 is: 535.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.32 : 621.59 = 358.48 : x
  2. Step 2: Convert to fraction form
    416.32/621.59 = 358.48/x
  3. Step 3: Cross multiply
    416.32x = 621.59 × 358.48
  4. Step 4: Simplify right side
    416.32x = 222,827.58
  5. Step 5: Solve for x
    x = 222,827.58/416.32
  6. Step 6: Final answer
    x = 535.23

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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.