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Finding the Fourth Proportional to 735.02, 1,014.40 and 486.40

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Solution

The fourth proportional to 735.02, 1,014.40 and 486.40 is: 671.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.02 : 1,014.40 = 486.40 : x
  2. Step 2: Convert to fraction form
    735.02/1,014.40 = 486.40/x
  3. Step 3: Cross multiply
    735.02x = 1,014.40 × 486.40
  4. Step 4: Simplify right side
    735.02x = 493,404.16
  5. Step 5: Solve for x
    x = 493,404.16/735.02
  6. Step 6: Final answer
    x = 671.28

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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.