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Finding the Fourth Proportional to 1,653.77, 2,480.06 and 666.29

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Solution

The fourth proportional to 1,653.77, 2,480.06 and 666.29 is: 999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.77 : 2,480.06 = 666.29 : x
  2. Step 2: Convert to fraction form
    1,653.77/2,480.06 = 666.29/x
  3. Step 3: Cross multiply
    1,653.77x = 2,480.06 × 666.29
  4. Step 4: Simplify right side
    1,653.77x = 1,652,423.45
  5. Step 5: Solve for x
    x = 1,652,423.45/1,653.77
  6. Step 6: Final answer
    x = 999.19

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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.