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Finding the Fourth Proportional to 507.29, 698.55 and 470.54

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Solution

The fourth proportional to 507.29, 698.55 and 470.54 is: 647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.29 : 698.55 = 470.54 : x
  2. Step 2: Convert to fraction form
    507.29/698.55 = 470.54/x
  3. Step 3: Cross multiply
    507.29x = 698.55 × 470.54
  4. Step 4: Simplify right side
    507.29x = 328,692.22
  5. Step 5: Solve for x
    x = 328,692.22/507.29
  6. Step 6: Final answer
    x = 647.94

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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.