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Finding the Fourth Proportional to 964.83, 1,448.88 and 915.51

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Solution

The fourth proportional to 964.83, 1,448.88 and 915.51 is: 1,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.83 : 1,448.88 = 915.51 : x
  2. Step 2: Convert to fraction form
    964.83/1,448.88 = 915.51/x
  3. Step 3: Cross multiply
    964.83x = 1,448.88 × 915.51
  4. Step 4: Simplify right side
    964.83x = 1,326,452.31
  5. Step 5: Solve for x
    x = 1,326,452.31/964.83
  6. Step 6: Final answer
    x = 1,374.81

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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.