Home / 1,165.21-1,747.27-434.32

Finding the Fourth Proportional to 1,165.21, 1,747.27 and 434.32

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Solution

The fourth proportional to 1,165.21, 1,747.27 and 434.32 is: 651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.21 : 1,747.27 = 434.32 : x
  2. Step 2: Convert to fraction form
    1,165.21/1,747.27 = 434.32/x
  3. Step 3: Cross multiply
    1,165.21x = 1,747.27 × 434.32
  4. Step 4: Simplify right side
    1,165.21x = 758,874.31
  5. Step 5: Solve for x
    x = 758,874.31/1,165.21
  6. Step 6: Final answer
    x = 651.28

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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.