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Finding the Fourth Proportional to 575.02, 792.45 and 528.46

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Solution

The fourth proportional to 575.02, 792.45 and 528.46 is: 728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.02 : 792.45 = 528.46 : x
  2. Step 2: Convert to fraction form
    575.02/792.45 = 528.46/x
  3. Step 3: Cross multiply
    575.02x = 792.45 × 528.46
  4. Step 4: Simplify right side
    575.02x = 418,778.13
  5. Step 5: Solve for x
    x = 418,778.13/575.02
  6. Step 6: Final answer
    x = 728.28

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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.