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Finding the Fourth Proportional to 1,070.99, 1,606.25 and 340.39

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Solution

The fourth proportional to 1,070.99, 1,606.25 and 340.39 is: 510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.99 : 1,606.25 = 340.39 : x
  2. Step 2: Convert to fraction form
    1,070.99/1,606.25 = 340.39/x
  3. Step 3: Cross multiply
    1,070.99x = 1,606.25 × 340.39
  4. Step 4: Simplify right side
    1,070.99x = 546,751.44
  5. Step 5: Solve for x
    x = 546,751.44/1,070.99
  6. Step 6: Final answer
    x = 510.51

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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.