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Finding the Fourth Proportional to 651.02, 975.86 and 488.21

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Solution

The fourth proportional to 651.02, 975.86 and 488.21 is: 731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.02 : 975.86 = 488.21 : x
  2. Step 2: Convert to fraction form
    651.02/975.86 = 488.21/x
  3. Step 3: Cross multiply
    651.02x = 975.86 × 488.21
  4. Step 4: Simplify right side
    651.02x = 476,422.17
  5. Step 5: Solve for x
    x = 476,422.17/651.02
  6. Step 6: Final answer
    x = 731.81

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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.