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Finding the Fourth Proportional to 951.34, 1,312.83 and 578.33

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Solution

The fourth proportional to 951.34, 1,312.83 and 578.33 is: 798.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.34 : 1,312.83 = 578.33 : x
  2. Step 2: Convert to fraction form
    951.34/1,312.83 = 578.33/x
  3. Step 3: Cross multiply
    951.34x = 1,312.83 × 578.33
  4. Step 4: Simplify right side
    951.34x = 759,252.26
  5. Step 5: Solve for x
    x = 759,252.26/951.34
  6. Step 6: Final answer
    x = 798.09

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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.