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Finding the Fourth Proportional to 1,666.06, 2,499.01 and 555.40

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Solution

The fourth proportional to 1,666.06, 2,499.01 and 555.40 is: 833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.06 : 2,499.01 = 555.40 : x
  2. Step 2: Convert to fraction form
    1,666.06/2,499.01 = 555.40/x
  3. Step 3: Cross multiply
    1,666.06x = 2,499.01 × 555.40
  4. Step 4: Simplify right side
    1,666.06x = 1,387,939.39
  5. Step 5: Solve for x
    x = 1,387,939.39/1,666.06
  6. Step 6: Final answer
    x = 833.07

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1.5x scale

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.