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Finding the Fourth Proportional to 757.51, 1,045.44 and 477.72

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Solution

The fourth proportional to 757.51, 1,045.44 and 477.72 is: 659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.51 : 1,045.44 = 477.72 : x
  2. Step 2: Convert to fraction form
    757.51/1,045.44 = 477.72/x
  3. Step 3: Cross multiply
    757.51x = 1,045.44 × 477.72
  4. Step 4: Simplify right side
    757.51x = 499,427.60
  5. Step 5: Solve for x
    x = 499,427.60/757.51
  6. Step 6: Final answer
    x = 659.30

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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.