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Finding the Fourth Proportional to 741.24, 1,115.76 and 675.63

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Solution

The fourth proportional to 741.24, 1,115.76 and 675.63 is: 1,017.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.24 : 1,115.76 = 675.63 : x
  2. Step 2: Convert to fraction form
    741.24/1,115.76 = 675.63/x
  3. Step 3: Cross multiply
    741.24x = 1,115.76 × 675.63
  4. Step 4: Simplify right side
    741.24x = 753,840.93
  5. Step 5: Solve for x
    x = 753,840.93/741.24
  6. Step 6: Final answer
    x = 1,017.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.