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Finding the Fourth Proportional to 964.15, 1,444.95 and 525.59

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Solution

The fourth proportional to 964.15, 1,444.95 and 525.59 is: 787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.15 : 1,444.95 = 525.59 : x
  2. Step 2: Convert to fraction form
    964.15/1,444.95 = 525.59/x
  3. Step 3: Cross multiply
    964.15x = 1,444.95 × 525.59
  4. Step 4: Simplify right side
    964.15x = 759,449.46
  5. Step 5: Solve for x
    x = 759,449.46/964.15
  6. Step 6: Final answer
    x = 787.69

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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.