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Finding the Fourth Proportional to 1,560.65, 2,341.31 and 465.10

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Solution

The fourth proportional to 1,560.65, 2,341.31 and 465.10 is: 697.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.65 : 2,341.31 = 465.10 : x
  2. Step 2: Convert to fraction form
    1,560.65/2,341.31 = 465.10/x
  3. Step 3: Cross multiply
    1,560.65x = 2,341.31 × 465.10
  4. Step 4: Simplify right side
    1,560.65x = 1,088,935.10
  5. Step 5: Solve for x
    x = 1,088,935.10/1,560.65
  6. Step 6: Final answer
    x = 697.75

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Double scale
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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.