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Finding the Fourth Proportional to 529.36, 793.08 and 400.72

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Solution

The fourth proportional to 529.36, 793.08 and 400.72 is: 600.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.36 : 793.08 = 400.72 : x
  2. Step 2: Convert to fraction form
    529.36/793.08 = 400.72/x
  3. Step 3: Cross multiply
    529.36x = 793.08 × 400.72
  4. Step 4: Simplify right side
    529.36x = 317,803.02
  5. Step 5: Solve for x
    x = 317,803.02/529.36
  6. Step 6: Final answer
    x = 600.35

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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.