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Finding the Fourth Proportional to 615.51, 848.88 and 415.89

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Solution

The fourth proportional to 615.51, 848.88 and 415.89 is: 573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.51 : 848.88 = 415.89 : x
  2. Step 2: Convert to fraction form
    615.51/848.88 = 415.89/x
  3. Step 3: Cross multiply
    615.51x = 848.88 × 415.89
  4. Step 4: Simplify right side
    615.51x = 353,040.70
  5. Step 5: Solve for x
    x = 353,040.70/615.51
  6. Step 6: Final answer
    x = 573.57

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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.