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Finding the Fourth Proportional to 973.67, 1,459.71 and 664.74

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Solution

The fourth proportional to 973.67, 1,459.71 and 664.74 is: 996.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.67 : 1,459.71 = 664.74 : x
  2. Step 2: Convert to fraction form
    973.67/1,459.71 = 664.74/x
  3. Step 3: Cross multiply
    973.67x = 1,459.71 × 664.74
  4. Step 4: Simplify right side
    973.67x = 970,327.63
  5. Step 5: Solve for x
    x = 970,327.63/973.67
  6. Step 6: Final answer
    x = 996.57

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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.