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Finding the Fourth Proportional to 442.50, 608.72 and 424.74

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Solution

The fourth proportional to 442.50, 608.72 and 424.74 is: 584.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.50 : 608.72 = 424.74 : x
  2. Step 2: Convert to fraction form
    442.50/608.72 = 424.74/x
  3. Step 3: Cross multiply
    442.50x = 608.72 × 424.74
  4. Step 4: Simplify right side
    442.50x = 258,547.73
  5. Step 5: Solve for x
    x = 258,547.73/442.50
  6. Step 6: Final answer
    x = 584.29

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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.