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Finding the Fourth Proportional to 469.64, 703.96 and 429.52

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Solution

The fourth proportional to 469.64, 703.96 and 429.52 is: 643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.64 : 703.96 = 429.52 : x
  2. Step 2: Convert to fraction form
    469.64/703.96 = 429.52/x
  3. Step 3: Cross multiply
    469.64x = 703.96 × 429.52
  4. Step 4: Simplify right side
    469.64x = 302,364.90
  5. Step 5: Solve for x
    x = 302,364.90/469.64
  6. Step 6: Final answer
    x = 643.82

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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.