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Finding the Fourth Proportional to 1,070.76, 1,606.26 and 340.20

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Solution

The fourth proportional to 1,070.76, 1,606.26 and 340.20 is: 510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.76 : 1,606.26 = 340.20 : x
  2. Step 2: Convert to fraction form
    1,070.76/1,606.26 = 340.20/x
  3. Step 3: Cross multiply
    1,070.76x = 1,606.26 × 340.20
  4. Step 4: Simplify right side
    1,070.76x = 546,449.65
  5. Step 5: Solve for x
    x = 546,449.65/1,070.76
  6. Step 6: Final answer
    x = 510.34

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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.