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Finding the Fourth Proportional to 529.47, 790.34 and 490.39

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Solution

The fourth proportional to 529.47, 790.34 and 490.39 is: 732.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.47 : 790.34 = 490.39 : x
  2. Step 2: Convert to fraction form
    529.47/790.34 = 490.39/x
  3. Step 3: Cross multiply
    529.47x = 790.34 × 490.39
  4. Step 4: Simplify right side
    529.47x = 387,575.19
  5. Step 5: Solve for x
    x = 387,575.19/529.47
  6. Step 6: Final answer
    x = 732.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.