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Finding the Fourth Proportional to 748.90, 1,033.48 and 417.34

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Solution

The fourth proportional to 748.90, 1,033.48 and 417.34 is: 575.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.90 : 1,033.48 = 417.34 : x
  2. Step 2: Convert to fraction form
    748.90/1,033.48 = 417.34/x
  3. Step 3: Cross multiply
    748.90x = 1,033.48 × 417.34
  4. Step 4: Simplify right side
    748.90x = 431,312.54
  5. Step 5: Solve for x
    x = 431,312.54/748.90
  6. Step 6: Final answer
    x = 575.93

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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.