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Finding the Fourth Proportional to 847.76, 1,271.64 and 501.04

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Solution

The fourth proportional to 847.76, 1,271.64 and 501.04 is: 751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.76 : 1,271.64 = 501.04 : x
  2. Step 2: Convert to fraction form
    847.76/1,271.64 = 501.04/x
  3. Step 3: Cross multiply
    847.76x = 1,271.64 × 501.04
  4. Step 4: Simplify right side
    847.76x = 637,142.51
  5. Step 5: Solve for x
    x = 637,142.51/847.76
  6. Step 6: Final answer
    x = 751.56

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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.