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Finding the Fourth Proportional to 595.04, 821.22 and 448.40

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Solution

The fourth proportional to 595.04, 821.22 and 448.40 is: 618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.04 : 821.22 = 448.40 : x
  2. Step 2: Convert to fraction form
    595.04/821.22 = 448.40/x
  3. Step 3: Cross multiply
    595.04x = 821.22 × 448.40
  4. Step 4: Simplify right side
    595.04x = 368,235.05
  5. Step 5: Solve for x
    x = 368,235.05/595.04
  6. Step 6: Final answer
    x = 618.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.