Home / 1,071.57-1,478.66-623.35

Finding the Fourth Proportional to 1,071.57, 1,478.66 and 623.35

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Solution

The fourth proportional to 1,071.57, 1,478.66 and 623.35 is: 860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.57 : 1,478.66 = 623.35 : x
  2. Step 2: Convert to fraction form
    1,071.57/1,478.66 = 623.35/x
  3. Step 3: Cross multiply
    1,071.57x = 1,478.66 × 623.35
  4. Step 4: Simplify right side
    1,071.57x = 921,722.71
  5. Step 5: Solve for x
    x = 921,722.71/1,071.57
  6. Step 6: Final answer
    x = 860.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.