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Finding the Fourth Proportional to 488.98, 734.58 and 284.04

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Solution

The fourth proportional to 488.98, 734.58 and 284.04 is: 426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.98 : 734.58 = 284.04 : x
  2. Step 2: Convert to fraction form
    488.98/734.58 = 284.04/x
  3. Step 3: Cross multiply
    488.98x = 734.58 × 284.04
  4. Step 4: Simplify right side
    488.98x = 208,650.10
  5. Step 5: Solve for x
    x = 208,650.10/488.98
  6. Step 6: Final answer
    x = 426.70

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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.