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Finding the Fourth Proportional to 595.54, 821.88 and 447.91

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Solution

The fourth proportional to 595.54, 821.88 and 447.91 is: 618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.54 : 821.88 = 447.91 : x
  2. Step 2: Convert to fraction form
    595.54/821.88 = 447.91/x
  3. Step 3: Cross multiply
    595.54x = 821.88 × 447.91
  4. Step 4: Simplify right side
    595.54x = 368,128.27
  5. Step 5: Solve for x
    x = 368,128.27/595.54
  6. Step 6: Final answer
    x = 618.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.