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Finding the Fourth Proportional to 1,140.46, 1,710.60 and 400.02

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Solution

The fourth proportional to 1,140.46, 1,710.60 and 400.02 is: 600.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.46 : 1,710.60 = 400.02 : x
  2. Step 2: Convert to fraction form
    1,140.46/1,710.60 = 400.02/x
  3. Step 3: Cross multiply
    1,140.46x = 1,710.60 × 400.02
  4. Step 4: Simplify right side
    1,140.46x = 684,274.21
  5. Step 5: Solve for x
    x = 684,274.21/1,140.46
  6. Step 6: Final answer
    x = 600.00

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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.