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Finding the Fourth Proportional to 627.14, 865.04 and 430.76

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Solution

The fourth proportional to 627.14, 865.04 and 430.76 is: 594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.14 : 865.04 = 430.76 : x
  2. Step 2: Convert to fraction form
    627.14/865.04 = 430.76/x
  3. Step 3: Cross multiply
    627.14x = 865.04 × 430.76
  4. Step 4: Simplify right side
    627.14x = 372,624.63
  5. Step 5: Solve for x
    x = 372,624.63/627.14
  6. Step 6: Final answer
    x = 594.16

Related Problems

Find fourth proportional to 313.57, 432.52 and 215.38
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.