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Finding the Fourth Proportional to 741.35, 1,023.05 and 446.78

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Solution

The fourth proportional to 741.35, 1,023.05 and 446.78 is: 616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.35 : 1,023.05 = 446.78 : x
  2. Step 2: Convert to fraction form
    741.35/1,023.05 = 446.78/x
  3. Step 3: Cross multiply
    741.35x = 1,023.05 × 446.78
  4. Step 4: Simplify right side
    741.35x = 457,075.16
  5. Step 5: Solve for x
    x = 457,075.16/741.35
  6. Step 6: Final answer
    x = 616.55

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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.