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Finding the Fourth Proportional to 611.51, 915.12 and 585.99

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Solution

The fourth proportional to 611.51, 915.12 and 585.99 is: 876.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.51 : 915.12 = 585.99 : x
  2. Step 2: Convert to fraction form
    611.51/915.12 = 585.99/x
  3. Step 3: Cross multiply
    611.51x = 915.12 × 585.99
  4. Step 4: Simplify right side
    611.51x = 536,251.17
  5. Step 5: Solve for x
    x = 536,251.17/611.51
  6. Step 6: Final answer
    x = 876.94

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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.