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Finding the Fourth Proportional to 438.98, 659.03 and 437.00

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Solution

The fourth proportional to 438.98, 659.03 and 437.00 is: 656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.98 : 659.03 = 437.00 : x
  2. Step 2: Convert to fraction form
    438.98/659.03 = 437.00/x
  3. Step 3: Cross multiply
    438.98x = 659.03 × 437.00
  4. Step 4: Simplify right side
    438.98x = 287,990.63
  5. Step 5: Solve for x
    x = 287,990.63/438.98
  6. Step 6: Final answer
    x = 656.05

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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.