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Finding the Fourth Proportional to 504.69, 696.45 and 283.64

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Solution

The fourth proportional to 504.69, 696.45 and 283.64 is: 391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.69 : 696.45 = 283.64 : x
  2. Step 2: Convert to fraction form
    504.69/696.45 = 283.64/x
  3. Step 3: Cross multiply
    504.69x = 696.45 × 283.64
  4. Step 4: Simplify right side
    504.69x = 197,537.06
  5. Step 5: Solve for x
    x = 197,537.06/504.69
  6. Step 6: Final answer
    x = 391.40

Related Problems

Find fourth proportional to 252.34, 348.22 and 141.82
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Double scale
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Similar ratio
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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.