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Finding the Fourth Proportional to 647.67, 973.13 and 404.67

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Solution

The fourth proportional to 647.67, 973.13 and 404.67 is: 608.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.67 : 973.13 = 404.67 : x
  2. Step 2: Convert to fraction form
    647.67/973.13 = 404.67/x
  3. Step 3: Cross multiply
    647.67x = 973.13 × 404.67
  4. Step 4: Simplify right side
    647.67x = 393,794.49
  5. Step 5: Solve for x
    x = 393,794.49/647.67
  6. Step 6: Final answer
    x = 608.02

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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.