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Finding the Fourth Proportional to 565.68, 848.61 and 257.67

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Solution

The fourth proportional to 565.68, 848.61 and 257.67 is: 386.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.68 : 848.61 = 257.67 : x
  2. Step 2: Convert to fraction form
    565.68/848.61 = 257.67/x
  3. Step 3: Cross multiply
    565.68x = 848.61 × 257.67
  4. Step 4: Simplify right side
    565.68x = 218,661.34
  5. Step 5: Solve for x
    x = 218,661.34/565.68
  6. Step 6: Final answer
    x = 386.55

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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.