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Finding the Fourth Proportional to 450.37, 670.77 and 430.37

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Solution

The fourth proportional to 450.37, 670.77 and 430.37 is: 640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.37 : 670.77 = 430.37 : x
  2. Step 2: Convert to fraction form
    450.37/670.77 = 430.37/x
  3. Step 3: Cross multiply
    450.37x = 670.77 × 430.37
  4. Step 4: Simplify right side
    450.37x = 288,679.28
  5. Step 5: Solve for x
    x = 288,679.28/450.37
  6. Step 6: Final answer
    x = 640.98

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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.