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Finding the Fourth Proportional to 1,530.65, 2,296.13 and 490.39

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Solution

The fourth proportional to 1,530.65, 2,296.13 and 490.39 is: 735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.65 : 2,296.13 = 490.39 : x
  2. Step 2: Convert to fraction form
    1,530.65/2,296.13 = 490.39/x
  3. Step 3: Cross multiply
    1,530.65x = 2,296.13 × 490.39
  4. Step 4: Simplify right side
    1,530.65x = 1,126,006.67
  5. Step 5: Solve for x
    x = 1,126,006.67/1,530.65
  6. Step 6: Final answer
    x = 735.64

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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.