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Finding the Fourth Proportional to 528.98, 730.20 and 473.63

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Solution

The fourth proportional to 528.98, 730.20 and 473.63 is: 653.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.98 : 730.20 = 473.63 : x
  2. Step 2: Convert to fraction form
    528.98/730.20 = 473.63/x
  3. Step 3: Cross multiply
    528.98x = 730.20 × 473.63
  4. Step 4: Simplify right side
    528.98x = 345,840.98
  5. Step 5: Solve for x
    x = 345,840.98/528.98
  6. Step 6: Final answer
    x = 653.79

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Double scale
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1.5x scale

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.