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Finding the Fourth Proportional to 667.04, 993.36 and 652.66

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Solution

The fourth proportional to 667.04, 993.36 and 652.66 is: 971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.04 : 993.36 = 652.66 : x
  2. Step 2: Convert to fraction form
    667.04/993.36 = 652.66/x
  3. Step 3: Cross multiply
    667.04x = 993.36 × 652.66
  4. Step 4: Simplify right side
    667.04x = 648,326.30
  5. Step 5: Solve for x
    x = 648,326.30/667.04
  6. Step 6: Final answer
    x = 971.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.