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Finding the Fourth Proportional to 964.66, 1,329.93 and 653.62

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Solution

The fourth proportional to 964.66, 1,329.93 and 653.62 is: 901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.66 : 1,329.93 = 653.62 : x
  2. Step 2: Convert to fraction form
    964.66/1,329.93 = 653.62/x
  3. Step 3: Cross multiply
    964.66x = 1,329.93 × 653.62
  4. Step 4: Simplify right side
    964.66x = 869,268.85
  5. Step 5: Solve for x
    x = 869,268.85/964.66
  6. Step 6: Final answer
    x = 901.11

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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.