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Finding the Fourth Proportional to 512.64, 707.04 and 432.60

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Solution

The fourth proportional to 512.64, 707.04 and 432.60 is: 596.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.64 : 707.04 = 432.60 : x
  2. Step 2: Convert to fraction form
    512.64/707.04 = 432.60/x
  3. Step 3: Cross multiply
    512.64x = 707.04 × 432.60
  4. Step 4: Simplify right side
    512.64x = 305,865.50
  5. Step 5: Solve for x
    x = 305,865.50/512.64
  6. Step 6: Final answer
    x = 596.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.