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Finding the Fourth Proportional to 915.63, 1,263.12 and 600.75

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Solution

The fourth proportional to 915.63, 1,263.12 and 600.75 is: 828.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.63 : 1,263.12 = 600.75 : x
  2. Step 2: Convert to fraction form
    915.63/1,263.12 = 600.75/x
  3. Step 3: Cross multiply
    915.63x = 1,263.12 × 600.75
  4. Step 4: Simplify right side
    915.63x = 758,819.34
  5. Step 5: Solve for x
    x = 758,819.34/915.63
  6. Step 6: Final answer
    x = 828.74

Related Problems

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Half scale
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Double scale
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1.5x scale

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.