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Finding the Fourth Proportional to 761.51, 1,050.75 and 525.93

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Solution

The fourth proportional to 761.51, 1,050.75 and 525.93 is: 725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.51 : 1,050.75 = 525.93 : x
  2. Step 2: Convert to fraction form
    761.51/1,050.75 = 525.93/x
  3. Step 3: Cross multiply
    761.51x = 1,050.75 × 525.93
  4. Step 4: Simplify right side
    761.51x = 552,620.95
  5. Step 5: Solve for x
    x = 552,620.95/761.51
  6. Step 6: Final answer
    x = 725.70

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Double scale
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1.5x scale

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.