Home / 1,220.32-1,831.08-570.94

Finding the Fourth Proportional to 1,220.32, 1,831.08 and 570.94

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Solution

The fourth proportional to 1,220.32, 1,831.08 and 570.94 is: 856.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.32 : 1,831.08 = 570.94 : x
  2. Step 2: Convert to fraction form
    1,220.32/1,831.08 = 570.94/x
  3. Step 3: Cross multiply
    1,220.32x = 1,831.08 × 570.94
  4. Step 4: Simplify right side
    1,220.32x = 1,045,436.82
  5. Step 5: Solve for x
    x = 1,045,436.82/1,220.32
  6. Step 6: Final answer
    x = 856.69

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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.