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Finding the Fourth Proportional to 951.07, 1,312.88 and 578.16

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Solution

The fourth proportional to 951.07, 1,312.88 and 578.16 is: 798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.07 : 1,312.88 = 578.16 : x
  2. Step 2: Convert to fraction form
    951.07/1,312.88 = 578.16/x
  3. Step 3: Cross multiply
    951.07x = 1,312.88 × 578.16
  4. Step 4: Simplify right side
    951.07x = 759,060.38
  5. Step 5: Solve for x
    x = 759,060.38/951.07
  6. Step 6: Final answer
    x = 798.11

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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.