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Finding the Fourth Proportional to 1,665.03, 2,497.55 and 510.78

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Solution

The fourth proportional to 1,665.03, 2,497.55 and 510.78 is: 766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.03 : 2,497.55 = 510.78 : x
  2. Step 2: Convert to fraction form
    1,665.03/2,497.55 = 510.78/x
  3. Step 3: Cross multiply
    1,665.03x = 2,497.55 × 510.78
  4. Step 4: Simplify right side
    1,665.03x = 1,275,698.59
  5. Step 5: Solve for x
    x = 1,275,698.59/1,665.03
  6. Step 6: Final answer
    x = 766.17

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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.