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Finding the Fourth Proportional to 607.74, 840.36 and 483.18

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Solution

The fourth proportional to 607.74, 840.36 and 483.18 is: 668.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.74 : 840.36 = 483.18 : x
  2. Step 2: Convert to fraction form
    607.74/840.36 = 483.18/x
  3. Step 3: Cross multiply
    607.74x = 840.36 × 483.18
  4. Step 4: Simplify right side
    607.74x = 406,045.14
  5. Step 5: Solve for x
    x = 406,045.14/607.74
  6. Step 6: Final answer
    x = 668.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.