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Finding the Fourth Proportional to 738.53, 1,018.95 and 458.77

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Solution

The fourth proportional to 738.53, 1,018.95 and 458.77 is: 632.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.53 : 1,018.95 = 458.77 : x
  2. Step 2: Convert to fraction form
    738.53/1,018.95 = 458.77/x
  3. Step 3: Cross multiply
    738.53x = 1,018.95 × 458.77
  4. Step 4: Simplify right side
    738.53x = 467,463.69
  5. Step 5: Solve for x
    x = 467,463.69/738.53
  6. Step 6: Final answer
    x = 632.97

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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.