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Finding the Fourth Proportional to 746.77, 1,030.55 and 451.83

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Solution

The fourth proportional to 746.77, 1,030.55 and 451.83 is: 623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.77 : 1,030.55 = 451.83 : x
  2. Step 2: Convert to fraction form
    746.77/1,030.55 = 451.83/x
  3. Step 3: Cross multiply
    746.77x = 1,030.55 × 451.83
  4. Step 4: Simplify right side
    746.77x = 465,630.49
  5. Step 5: Solve for x
    x = 465,630.49/746.77
  6. Step 6: Final answer
    x = 623.53

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Find fourth proportional to 373.38, 515.27 and 225.91
Half scale
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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.