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Finding the Fourth Proportional to 647.03, 891.86 and 437.14

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Solution

The fourth proportional to 647.03, 891.86 and 437.14 is: 602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.03 : 891.86 = 437.14 : x
  2. Step 2: Convert to fraction form
    647.03/891.86 = 437.14/x
  3. Step 3: Cross multiply
    647.03x = 891.86 × 437.14
  4. Step 4: Simplify right side
    647.03x = 389,864.36
  5. Step 5: Solve for x
    x = 389,864.36/647.03
  6. Step 6: Final answer
    x = 602.55

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Why These Related Problems?

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