Home / 1,030.35-1,545.39-510.15

Finding the Fourth Proportional to 1,030.35, 1,545.39 and 510.15

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Solution

The fourth proportional to 1,030.35, 1,545.39 and 510.15 is: 765.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.35 : 1,545.39 = 510.15 : x
  2. Step 2: Convert to fraction form
    1,030.35/1,545.39 = 510.15/x
  3. Step 3: Cross multiply
    1,030.35x = 1,545.39 × 510.15
  4. Step 4: Simplify right side
    1,030.35x = 788,380.71
  5. Step 5: Solve for x
    x = 788,380.71/1,030.35
  6. Step 6: Final answer
    x = 765.16

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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.