Home / 1,020.14-1,530.05-289.77

Finding the Fourth Proportional to 1,020.14, 1,530.05 and 289.77

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Solution

The fourth proportional to 1,020.14, 1,530.05 and 289.77 is: 434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.14 : 1,530.05 = 289.77 : x
  2. Step 2: Convert to fraction form
    1,020.14/1,530.05 = 289.77/x
  3. Step 3: Cross multiply
    1,020.14x = 1,530.05 × 289.77
  4. Step 4: Simplify right side
    1,020.14x = 443,355.40
  5. Step 5: Solve for x
    x = 443,355.40/1,020.14
  6. Step 6: Final answer
    x = 434.60

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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.