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Finding the Fourth Proportional to 507.86, 702.21 and 484.50

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Solution

The fourth proportional to 507.86, 702.21 and 484.50 is: 669.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.86 : 702.21 = 484.50 : x
  2. Step 2: Convert to fraction form
    507.86/702.21 = 484.50/x
  3. Step 3: Cross multiply
    507.86x = 702.21 × 484.50
  4. Step 4: Simplify right side
    507.86x = 340,220.75
  5. Step 5: Solve for x
    x = 340,220.75/507.86
  6. Step 6: Final answer
    x = 669.91

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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.