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Finding the Fourth Proportional to 945.10, 1,303.68 and 758.80

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Solution

The fourth proportional to 945.10, 1,303.68 and 758.80 is: 1,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.10 : 1,303.68 = 758.80 : x
  2. Step 2: Convert to fraction form
    945.10/1,303.68 = 758.80/x
  3. Step 3: Cross multiply
    945.10x = 1,303.68 × 758.80
  4. Step 4: Simplify right side
    945.10x = 989,232.38
  5. Step 5: Solve for x
    x = 989,232.38/945.10
  6. Step 6: Final answer
    x = 1,046.70

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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.