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Finding the Fourth Proportional to 1,345.16, 2,018.10 and 523.46

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Solution

The fourth proportional to 1,345.16, 2,018.10 and 523.46 is: 785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.16 : 2,018.10 = 523.46 : x
  2. Step 2: Convert to fraction form
    1,345.16/2,018.10 = 523.46/x
  3. Step 3: Cross multiply
    1,345.16x = 2,018.10 × 523.46
  4. Step 4: Simplify right side
    1,345.16x = 1,056,394.63
  5. Step 5: Solve for x
    x = 1,056,394.63/1,345.16
  6. Step 6: Final answer
    x = 785.33

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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.