Home / 1,160.16-1,739.94-429.64

Finding the Fourth Proportional to 1,160.16, 1,739.94 and 429.64

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Solution

The fourth proportional to 1,160.16, 1,739.94 and 429.64 is: 644.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.16 : 1,739.94 = 429.64 : x
  2. Step 2: Convert to fraction form
    1,160.16/1,739.94 = 429.64/x
  3. Step 3: Cross multiply
    1,160.16x = 1,739.94 × 429.64
  4. Step 4: Simplify right side
    1,160.16x = 747,547.82
  5. Step 5: Solve for x
    x = 747,547.82/1,160.16
  6. Step 6: Final answer
    x = 644.35

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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.