Home / 1,065.37-1,470.20-623.18

Finding the Fourth Proportional to 1,065.37, 1,470.20 and 623.18

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Solution

The fourth proportional to 1,065.37, 1,470.20 and 623.18 is: 859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.37 : 1,470.20 = 623.18 : x
  2. Step 2: Convert to fraction form
    1,065.37/1,470.20 = 623.18/x
  3. Step 3: Cross multiply
    1,065.37x = 1,470.20 × 623.18
  4. Step 4: Simplify right side
    1,065.37x = 916,199.24
  5. Step 5: Solve for x
    x = 916,199.24/1,065.37
  6. Step 6: Final answer
    x = 859.98

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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.