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Finding the Fourth Proportional to 697.06, 1,045.56 and 210.10

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Solution

The fourth proportional to 697.06, 1,045.56 and 210.10 is: 315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.06 : 1,045.56 = 210.10 : x
  2. Step 2: Convert to fraction form
    697.06/1,045.56 = 210.10/x
  3. Step 3: Cross multiply
    697.06x = 1,045.56 × 210.10
  4. Step 4: Simplify right side
    697.06x = 219,672.16
  5. Step 5: Solve for x
    x = 219,672.16/697.06
  6. Step 6: Final answer
    x = 315.14

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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.