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Finding the Fourth Proportional to 565.40, 846.90 and 493.40

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Solution

The fourth proportional to 565.40, 846.90 and 493.40 is: 739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.40 : 846.90 = 493.40 : x
  2. Step 2: Convert to fraction form
    565.40/846.90 = 493.40/x
  3. Step 3: Cross multiply
    565.40x = 846.90 × 493.40
  4. Step 4: Simplify right side
    565.40x = 417,860.46
  5. Step 5: Solve for x
    x = 417,860.46/565.40
  6. Step 6: Final answer
    x = 739.05

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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.