Home / 1,435.12-2,152.23-557.56

Finding the Fourth Proportional to 1,435.12, 2,152.23 and 557.56

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Solution

The fourth proportional to 1,435.12, 2,152.23 and 557.56 is: 836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.12 : 2,152.23 = 557.56 : x
  2. Step 2: Convert to fraction form
    1,435.12/2,152.23 = 557.56/x
  3. Step 3: Cross multiply
    1,435.12x = 2,152.23 × 557.56
  4. Step 4: Simplify right side
    1,435.12x = 1,199,999.95
  5. Step 5: Solve for x
    x = 1,199,999.95/1,435.12
  6. Step 6: Final answer
    x = 836.17

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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.