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Finding the Fourth Proportional to 953.06, 1,429.38 and 432.77

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Solution

The fourth proportional to 953.06, 1,429.38 and 432.77 is: 649.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.06 : 1,429.38 = 432.77 : x
  2. Step 2: Convert to fraction form
    953.06/1,429.38 = 432.77/x
  3. Step 3: Cross multiply
    953.06x = 1,429.38 × 432.77
  4. Step 4: Simplify right side
    953.06x = 618,585.64
  5. Step 5: Solve for x
    x = 618,585.64/953.06
  6. Step 6: Final answer
    x = 649.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.