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Finding the Fourth Proportional to 433.89, 647.89 and 341.55

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Solution

The fourth proportional to 433.89, 647.89 and 341.55 is: 510.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.89 : 647.89 = 341.55 : x
  2. Step 2: Convert to fraction form
    433.89/647.89 = 341.55/x
  3. Step 3: Cross multiply
    433.89x = 647.89 × 341.55
  4. Step 4: Simplify right side
    433.89x = 221,285.98
  5. Step 5: Solve for x
    x = 221,285.98/433.89
  6. Step 6: Final answer
    x = 510.00

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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.