Home / 750.15-1,125.30-339.35

Finding the Fourth Proportional to 750.15, 1,125.30 and 339.35

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Solution

The fourth proportional to 750.15, 1,125.30 and 339.35 is: 509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.15 : 1,125.30 = 339.35 : x
  2. Step 2: Convert to fraction form
    750.15/1,125.30 = 339.35/x
  3. Step 3: Cross multiply
    750.15x = 1,125.30 × 339.35
  4. Step 4: Simplify right side
    750.15x = 381,864.93
  5. Step 5: Solve for x
    x = 381,864.93/750.15
  6. Step 6: Final answer
    x = 509.05

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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.