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Finding the Fourth Proportional to 1,653.28, 2,281.50 and 954.64

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Solution

The fourth proportional to 1,653.28, 2,281.50 and 954.64 is: 1,317.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.28 : 2,281.50 = 954.64 : x
  2. Step 2: Convert to fraction form
    1,653.28/2,281.50 = 954.64/x
  3. Step 3: Cross multiply
    1,653.28x = 2,281.50 × 954.64
  4. Step 4: Simplify right side
    1,653.28x = 2,178,011.16
  5. Step 5: Solve for x
    x = 2,178,011.16/1,653.28
  6. Step 6: Final answer
    x = 1,317.39

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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.