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Finding the Fourth Proportional to 1,070.37, 1,605.73 and 340.12

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Solution

The fourth proportional to 1,070.37, 1,605.73 and 340.12 is: 510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.37 : 1,605.73 = 340.12 : x
  2. Step 2: Convert to fraction form
    1,070.37/1,605.73 = 340.12/x
  3. Step 3: Cross multiply
    1,070.37x = 1,605.73 × 340.12
  4. Step 4: Simplify right side
    1,070.37x = 546,140.89
  5. Step 5: Solve for x
    x = 546,140.89/1,070.37
  6. Step 6: Final answer
    x = 510.24

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1.5x scale

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.