Home / 1,140.93-1,710.56-400.35

Finding the Fourth Proportional to 1,140.93, 1,710.56 and 400.35

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Solution

The fourth proportional to 1,140.93, 1,710.56 and 400.35 is: 600.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.93 : 1,710.56 = 400.35 : x
  2. Step 2: Convert to fraction form
    1,140.93/1,710.56 = 400.35/x
  3. Step 3: Cross multiply
    1,140.93x = 1,710.56 × 400.35
  4. Step 4: Simplify right side
    1,140.93x = 684,820.69
  5. Step 5: Solve for x
    x = 684,820.69/1,140.93
  6. Step 6: Final answer
    x = 600.23

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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.