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Finding the Fourth Proportional to 565.51, 848.48 and 218.86

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Solution

The fourth proportional to 565.51, 848.48 and 218.86 is: 328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.51 : 848.48 = 218.86 : x
  2. Step 2: Convert to fraction form
    565.51/848.48 = 218.86/x
  3. Step 3: Cross multiply
    565.51x = 848.48 × 218.86
  4. Step 4: Simplify right side
    565.51x = 185,699.89
  5. Step 5: Solve for x
    x = 185,699.89/565.51
  6. Step 6: Final answer
    x = 328.38

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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.