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Finding the Fourth Proportional to 915.95, 1,264.60 and 601.77

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Solution

The fourth proportional to 915.95, 1,264.60 and 601.77 is: 830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.95 : 1,264.60 = 601.77 : x
  2. Step 2: Convert to fraction form
    915.95/1,264.60 = 601.77/x
  3. Step 3: Cross multiply
    915.95x = 1,264.60 × 601.77
  4. Step 4: Simplify right side
    915.95x = 760,998.34
  5. Step 5: Solve for x
    x = 760,998.34/915.95
  6. Step 6: Final answer
    x = 830.83

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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.