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Finding the Fourth Proportional to 483.88, 722.18 and 437.98

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Solution

The fourth proportional to 483.88, 722.18 and 437.98 is: 653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.88 : 722.18 = 437.98 : x
  2. Step 2: Convert to fraction form
    483.88/722.18 = 437.98/x
  3. Step 3: Cross multiply
    483.88x = 722.18 × 437.98
  4. Step 4: Simplify right side
    483.88x = 316,300.40
  5. Step 5: Solve for x
    x = 316,300.40/483.88
  6. Step 6: Final answer
    x = 653.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.