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Finding the Fourth Proportional to 660.04, 985.25 and 617.32

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Solution

The fourth proportional to 660.04, 985.25 and 617.32 is: 921.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.04 : 985.25 = 617.32 : x
  2. Step 2: Convert to fraction form
    660.04/985.25 = 617.32/x
  3. Step 3: Cross multiply
    660.04x = 985.25 × 617.32
  4. Step 4: Simplify right side
    660.04x = 608,214.53
  5. Step 5: Solve for x
    x = 608,214.53/660.04
  6. Step 6: Final answer
    x = 921.48

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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.