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Finding the Fourth Proportional to 751.90, 1,036.02 and 555.16

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Solution

The fourth proportional to 751.90, 1,036.02 and 555.16 is: 764.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.90 : 1,036.02 = 555.16 : x
  2. Step 2: Convert to fraction form
    751.90/1,036.02 = 555.16/x
  3. Step 3: Cross multiply
    751.90x = 1,036.02 × 555.16
  4. Step 4: Simplify right side
    751.90x = 575,156.86
  5. Step 5: Solve for x
    x = 575,156.86/751.90
  6. Step 6: Final answer
    x = 764.94

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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.