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Finding the Fourth Proportional to 848.34, 1,271.70 and 606.42

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Solution

The fourth proportional to 848.34, 1,271.70 and 606.42 is: 909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.34 : 1,271.70 = 606.42 : x
  2. Step 2: Convert to fraction form
    848.34/1,271.70 = 606.42/x
  3. Step 3: Cross multiply
    848.34x = 1,271.70 × 606.42
  4. Step 4: Simplify right side
    848.34x = 771,184.31
  5. Step 5: Solve for x
    x = 771,184.31/848.34
  6. Step 6: Final answer
    x = 909.05

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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.