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Finding the Fourth Proportional to 915.70, 1,376.58 and 848.06

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Solution

The fourth proportional to 915.70, 1,376.58 and 848.06 is: 1,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.70 : 1,376.58 = 848.06 : x
  2. Step 2: Convert to fraction form
    915.70/1,376.58 = 848.06/x
  3. Step 3: Cross multiply
    915.70x = 1,376.58 × 848.06
  4. Step 4: Simplify right side
    915.70x = 1,167,422.43
  5. Step 5: Solve for x
    x = 1,167,422.43/915.70
  6. Step 6: Final answer
    x = 1,274.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.