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Finding the Fourth Proportional to 434.58, 652.68 and 417.18

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Solution

The fourth proportional to 434.58, 652.68 and 417.18 is: 626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.58 : 652.68 = 417.18 : x
  2. Step 2: Convert to fraction form
    434.58/652.68 = 417.18/x
  3. Step 3: Cross multiply
    434.58x = 652.68 × 417.18
  4. Step 4: Simplify right side
    434.58x = 272,285.04
  5. Step 5: Solve for x
    x = 272,285.04/434.58
  6. Step 6: Final answer
    x = 626.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.