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Finding the Fourth Proportional to 529.74, 795.22 and 393.36

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Solution

The fourth proportional to 529.74, 795.22 and 393.36 is: 590.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.74 : 795.22 = 393.36 : x
  2. Step 2: Convert to fraction form
    529.74/795.22 = 393.36/x
  3. Step 3: Cross multiply
    529.74x = 795.22 × 393.36
  4. Step 4: Simplify right side
    529.74x = 312,803.77
  5. Step 5: Solve for x
    x = 312,803.77/529.74
  6. Step 6: Final answer
    x = 590.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.