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Finding the Fourth Proportional to 760.94, 1,049.20 and 465.95

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Solution

The fourth proportional to 760.94, 1,049.20 and 465.95 is: 642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.94 : 1,049.20 = 465.95 : x
  2. Step 2: Convert to fraction form
    760.94/1,049.20 = 465.95/x
  3. Step 3: Cross multiply
    760.94x = 1,049.20 × 465.95
  4. Step 4: Simplify right side
    760.94x = 488,878.82
  5. Step 5: Solve for x
    x = 488,878.82/760.94
  6. Step 6: Final answer
    x = 642.46

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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.